steobel



(No Model.)

V. 0.- STROBEL.

BLAST FURNAGB.

atented Sept. 22, 1885.

Witnesses Lithographnr. Wuhinglon. o, c.

UNITED STATES ATENT OFFICE.

VICTOR O. STROBEL, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO GORDON, STROBEL 83 LAUREAU, OF SAME PLACE.

BLAST-FURNACE.

SPECIFICATION forming part of Letters Patent No. 326,804, dated September 22, 1885.

Application filed April 15,1855. (No model.)

To all whom it may concern:

Be it known that I, VIoroR O. STROBEL, of Philadelphia, Philadelphia county, Pennsylvania, have invented certain new and useful Improvements in Blast-Furnaces, of which the following is a specification.

This invention pertains to the protection from destruction by heat of certain portions of blast-furnaces, and the improvements will be readily understood from the following description, taken in connection with the accompanying drawings, in which Figure 1 is a side elevation of a blast-furnacewith the throatwork and one side of the bosh-work shown in diametrical section; Fig. 2, asectional plan of the bell and hopper; and Fig. 3 a plan upon an enlarged scale of some of the bosh cooling-plates, one of the plates in the View being shown in horizontal section.

In the accompanying drawings, A represents the usual bell; B, the hopper; 0, an annular conduit cast in the lower rim of the bell; D, a similar conduit cast in the lower rim of the hopper; E, a chimney or chimney-connection over the top of the furnace; F, an aperture admilting atmospheric air near the apex of the bell to a passage in the wall of the bell and in communication with the conduit 0; G, a passage leading from the aperture F to the conduit 0; H, an air-tube leading from the apex of the bell to the chimney E; J, a passage in the wall of the bell, placing the conduit 0 in communication with the air-tube M; K, an airaperture at the top rim of the hopper; L, an air-pipe leading from a similar but oppositelydisposed aperture in the hopper to the chimney E, and M air-passages placing the conduit D in communication with the aperture K and air-pipe L.

The bell is to be raised and lowered as usual. The air-tube H, serving as one of the hangerrods of the bell, joins the chimney by a sliding connection.

The chimney E maintains an upward draft of air and serves to cause a constant inflow of cool air at the apertures F and K, this air circulating in the conduits O and D and thence passing to the chimney. The joint-seat of the bell against the hopper is thus kept properly cooled,

Inv the drawings, N represents hollow segmental plates built ring-like into the boshwall of the furnace; O, the point of air-admission into the cavity of each segment; P, an outlet-pipe from a cavity of each segment; Q, an air-pipe by which the various air-pas sages at the base of the furnace are placed in communication with the chimney; R, a ring of segmental plates similar to the plates N, disposed at a lower level in the boshes; S, a third ring of plates of similar character, but disposed still lower down.

Air entering a plate at O circulates in the cavity of the plate and leaves at the point P. The point P is placed in communication with the chimney E, so that the draft of the chimney will serve to produce the proper circulation of air. At the left-hand bosh-wall of Fig. 1 and at the front of the figure it will be seen that pipes T connect the air-discharges of plates S with the air-inlet of plates R, and the air-discharges of plates R with the airinlets of plates N, and the air-discharges of plate N with the chimney. By this means air from the atmosphere is received by the plates S and after traversing one of the plates passes up and into a plate, R, then up and into plate N, then out and up to the chimney. By this manner of connection thelower plates receive the cool and fresh air and the higher plates receive the air discharged therefrom, the air serving to cool the plates and preserve the boshes, and the plates subjected to the highest heat get the benefit of the coolest air. At the right hand of the bosh-wall in Fig. l the plates are connected differently, the air entering all the plates directly from the atmosphere and all of the plates discharging through the medium of pipe U.

V represents the tuyere-breasts of the furnace, provided at their noses with an airpassage; W, theposition of the monkey-tuyere or cindennotch; X, the point of admission by which the air of the atmosphere enters the coolingpassages of the tuyere-breasts, andY an outlet-pipe by which the air passes from the cavity of the tuyere-breasts to the chimney.

WVhen the outlet of the plates is arranged in connection with pipe U, that pipe then performs also the office of the pipe Y.

The office of the'chimney is to produce a circulation of the cooling-air in the cavities of the parts to be cooled, and this office may be fulfilled by one chimney in the manner indicated or by a multiplicity of chimneys, or the circulating motion may be secured by connecting with a chimney performing other chimney offices. The pipes Q, L, and H may themselves be of sufficient length to produce proper draft of air without the necessity for being connected to the chimney, and a device other than a chimney may be employed for causing the circulation of airas,for instance, suitable air-pumps may draw or force the air through the cavities.

It has been proposed to set vertically edge wise within the substance of the bosh-walls of a furnace, plates traversed by pipes cast within them, and to place a similarly-provided plate beneath the hearth, to virtually form a portion of the wall by means of a hollow ring; to surround a furnace with an outer shell, leaving an airjacketbetween, provision being made in all of the cases for the admission and discharge of the cooling medium.

I claim as my invention-- 1. In a blast-furnace, the combination of hopper B, having integrally formed therewith the conduit D in its extreme lower edge and passages M within the wall of the hopper and leading from said conduit to the rim of the hopper, the chimney E, and the pipe L, connecting one of said passages M with the chimney,substantially as and for the purpose set forth.

2. In a blast-furnace, the combination of the bell A, having integrally formed with it the conduit 0 in. its lower edge, and the passage G,formed within the wall of the bell and leading from said conduit upward to an outlet near the apex of the bell, and the passage J, formed within the wall of the bell and leading'from said conduit to the apex of the bell, and the pipe H, secured to the apex of the bell in communication with the passage J, substantially 5 each two openingsifor the passage of air, and

a pipe leading from one ofsaid openings in each cavity to a device adapted to produce a circulation of air, substantially as and for the purposeset forth. p

5. In a blast-furnace, the combination of several series of flat segmental plates disposed horizontally within the brick-work of the bosh and provided with cavities, each cavity having two openings for the passage of air, pipes connecting a plate of one ring with plates of the other rings, and a pipe connecting one of such connected plates with a device for producing a circulation of air through the plates and connected pipes, substantially as and for the purpose set forth.

6. In a blast-furnace, the combination of a pipe, Q, several circular series of fiat segmental plates disposed horizontally within the brick Walls of the bosh, and pipes connecting the several circular series of bosh-plates with the pipe Q, substantially as and for the purpose set forth.

VICTOR O. STROBEL. Witnesses:

RIoHD. H. REIL Y, L. FRANK GORDON. 

